Test Booklet
Subject: SC, Grade: HS
CST High School Chemistry Part 1
Student name:
Author: California
District: California Released Tests
Printed: Tuesday April 23, 2013
CST High School Chemistry Part 1
SC:HS
1 A weather balloon with a 2-meter diameter at
ambient temperature holds 525 grams of helium.
What type of electronic probe could be used to
determine the pressure inside the balloon?
A
B
C
D
barometric
thermometric
calorimetric
spectrophotometric
2 Which would be most appropriate for collecting
data during a neutralization reaction?
A
B
C
D
a pH probe
a statistics program
a thermometer
a graphing program
3 A scientist observed changes in the gas pressure of
one mole of a gas in a sealed chamber with a fixed
volume. To identify the source of the changes, the
scientist should check for variations in the
A
B
C
D
air pressure outside the chamber.
molecular formula of the gas.
temperature of the chamber.
isotopes of the gas.
4 Electrical fires cannot be safely put out by dousing
them with water. However, fire extinguishers that
spray solid carbon dioxide on the fire work very
effectively. This method works because carbon
dioxide
A
B
C
D
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displaces the oxygen.
renders the fire’s fuel non-flammable.
forms water vapor.
blows the fire out with strong wind currents.
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CST High School Chemistry Part 1
SC:HS
5
In the cubic crystal shown, if each edge is 2.0
angstroms in length, what is the diagonal distance,
d, between atoms 1 and 3? (Assume that the
Pythagorean theorem can be used to solve this
problem.)
A 2.5Å
√
B 2 2.0 Å
√
C 2 3.0 Å
√
D 3 2.0 Å
6 In order to advance to the level of a theory, a
hypothesis should be
A
B
C
D
obviously accepted by most people.
a fully functional experiment.
in alignment with past theories.
repeatedly confirmed by experimentation.
7 Matter is made of atoms that have positive centers
of neutrons and protons surrounded by a cloud of
negatively charged electrons. This statement is
A a theory.
B a hypothesis.
C an inference.
D2 an observation.
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CST High School Chemistry Part 1
SC:HS
8 The model of ideal gases shown above is useful
because it
10
Which of the following ordered pairs of elements
shows an increase in atomic number but a decrease
in average atomic mass?
A accurately approximates the properties of most
gas molecules.
B predicts the behavior of other phases of matter.
C gives precise explanations for nonideal gas
behavior.
D shows a linear relation between gas pressure
and volume.
9 When a metal is heated in a flame, the flame has a
distinctive color. This information was eventually
extended to the study of stars because
A the color spectra of stars indicate which
elements are present.
B a red shift in star color indicates stars are
moving away.
C star color indicates absolute distance.
D it allows the observer to determine the size of
stars.
A
B
C
D
Ag to Pd
Co to Ni
Ge to Sn
Cr to Mo
11 Why is cobalt (Co) placed before nickel (Ni) on
the periodic table of the elements even though it
has a higher average atomic mass than nickel?
A
B
C
D
Nickel has one more proton.
Cobalt was discovered first.
Nickel has fewer electrons.
Cobalt has a lower density.
12 Generally, how do atomic masses vary throughout
the periodic table of the elements?
A They increase from left to right and top to
bottom.
B They increase from left to right and bottom to
top.
C They increase from right to left and top to
bottom.
D They increase from right to left and bottom to
top.
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CST High School Chemistry Part 1
13
SC:HS
15
Iodine would have chemical properties most like
A
B
C
D
manganese (Mn).
tellurium (Te).
chlorine (Cl).
xenon (Xe).
14 Which of the following elements is classified as a
metal?
A
B
C
D
bromine
helium
The chart above shows the relationship between
the first ionization energy and the increase in
atomic number. The letter on the chart for the
alkali family of elements is
A
B
C
D
W.
X.
Y.
Z.
16 Which of the following atoms has the largest
sulfur
atomic radius?
lithium
A
B
C
D
barium (Ba)
chlorine (Cl)
iodine (I)
magnesium (Mg)
17 Which of the following atoms has six valence
electrons?
A
B
C
D
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magnesium (Mg)
silicon (Si)
sulfur (S)
argon (Ar)
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CST High School Chemistry Part 1
18 Which statement best describes the density of an
atom’s nucleus?
A The nucleus occupies most of the atom’s
SC:HS
20 Why are enormous amounts of energy required to
separate a nucleus into its component protons and
neutrons even though the protons in the nucleus
repel each other?
volume but contains little of its mass.
B The nucleus occupies very little of the atom’s
volume and contains little of its mass.
C The nucleus occupies most of the atom’s
volume and contains most of its mass.
D The nucleus occupies very little of the atom’s
volume but contains most of its mass.
A The force of the protons repelling each other
is small compared to the attraction of the
neutrons to each other.
B The electrostatic forces acting between other
atoms lowers the force of repulsion of the
protons.
C The interactions between neutrons and electrons neutralize the repulsive forces between
the protons.
D The forces holding the nucleus together are
much stronger than the repulsion between the
protons.
19
21 The most abundant isotope of lead contains 82
What information do the experimental results
above reveal about the nucleus of the gold atom?
protons and 124 neutrons packed closely together
in the nucleus. Why do the protons stay together
in the nucleus rather than fly apart?
A Electrons in neighboring atoms neutralize
A The nucleus contains less than half the mass of
the atom.
B The nucleus is small and is the densest part of
the atom.
C The nucleus contains small positive and
negative particles.
D The nucleus is large and occupies most of the
repulsive forces between protons.
B Neutrons effectively block the protons and
keep them far apart to prevent repulsion.
C Electrostatic forces between neutrons and
protons hold the nucleus together.
D Nuclear forces overcome repulsive forces
between protons in the nucleus.
atom’s space.
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CST High School Chemistry Part 1
22 Which equation correctly represents the alpha
decay of polonium-214?
SC:HS
25 When cations and anions join, they form what
kind of chemical bond?
A
B
C
D
A
ionic
hydrogen
metallic
covalent
B
26 Which of the following correctly shows how
carbon and hydrogen bond to form a compound?
C
A
B
D
C
23 A 2-cm-thick piece of cardboard placed over
a radiation source would be most effective in
protecting against which type of
A
B
C
D
alpha
beta
gamma
x-ray
24 Which of the following is a monatomic gas at
STP?
A
B
C
D
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D
27 Some of the molecules found in the human body
are NH 2 CH 2 COOH (glycine), C 6 H 12 O 6
(glucose), and CH 3 (CH 2 ) 16 COOH (stearic
acid). The bonds they form are
A
B
C
D
nuclear.
metallic.
ionic.
covalent.
chlorine
fluorine
helium
nitrogen
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CST High School Chemistry Part 1
SC:HS
28
32
What type of bond do all of the molecules in the
table above have in common?
A
B
C
D
covalent
ionic
metallic
polar
29 The reason salt crystals, such as KCl, hold
together so well is because the cations are strongly
attracted to
A
B
C
D
neighboring cations.
the protons in the neighboring nucleus.
free electrons in the crystals.
neighboring anions.
30 What type of force holds ions together in salts
such as CaF 2 ?
A
B
C
D
Which of the following elements has the same
Lewis dot structure as silicon?
electrostatic
A
B
C
D
A
B
C
D
gallium (Ga)
salt
protein
ethanol
propane
34 For the polymer, polyvinyl chloride (PVC), ˜ CH
CH (CI) CH 2 CH (CI) CH 2 CH (CI) ˜
gravitational
A
B
C
D
temperature, a liquid differs from a gas because the
molecules of the liquid
arsenic (As)
joined together in long chains?
2
31 Under the same conditions of pressure and
aluminum (Al)
33 Which substance is made up of many monomers
magnetic
nuclear
germanium (Ge)
CH (Cl) .
CH (Cl) CHCH 2 .
CH 2 CH.
CH 2 CH (Cl) .
A have no regular arrangement.
B are in constant motion.
C have stronger forces of attraction between
them.
D take the shape of the container they are in.
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CST High School Chemistry Part 1
SC:HS
35 Which element is capable of forming stable,
38 When someone standing at one end of a large
extended chains of atoms through single, double,
or triple bonds with itself?
oxygen
room opens a bottle of vinegar, it may take several
minutes for a person at the other end to smell it.
Gas molecules at room temperature move at very
high velocities, so what is responsible for the delay
in detection of the vinegar?
nitrogen
A the increase in the airspace occupied by
A
B
C
D
A carbon
vinegar molecules
hydrogen
B the chemical reaction with nerves, which is
36 Proteins are large macromolecules composed of
slower than other sensory processes
thousands of subunits. The structure of the protein
depends on the sequence of
C attractive forces between the air and vinegar
A
B
C
D
D random collisions between the air and vinegar
lipids.
molecules
molecules
monosaccharides.
amino acids.
nucleosides.
37 When a cold tire is inflated to a certain pressure
and then is warmed up due to friction with the road,
the pressure increases. This happens because the
A air molecules hit the walls of the tire less
39 Methane (CH 4 ) gas diffuses through air because
the molecules are
A
B
C
D
moving randomly.
dissolving quickly.
traveling slowly.
expanding steadily.
frequently.
B rubber in the tire reacts with oxygen in the
atmosphere.
C air molecules speed up and collide with the tire
walls more often.
D air molecules diffuse rapidly through the walls
of the tire.
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40 The volume of 400 mL of chlorine gas at 400 mm
Hg is decreased to 200 mL at constant temperature.
What is the new gas pressure?
A
B
C
D
400 mm Hg
300 mm Hg
800 mm Hg
650 mm Hg
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CST High School Chemistry Part 1
41 Under what circumstance might a gas decrease in
SC:HS
45 What is the equivalent of 423 kelvin in degrees
volume when heated?
Celsius?
A
B
C
D
A
B
C
D
The gas is held constant at STP.
The gas remains under uniform temperature.
The gas is placed under increasing pressure.
The gas undergoes a decrease in pressure.
223◦ C
-23◦ C
150◦ C
696◦ C
42 A sample of carbon dioxide gas occupies a volume
of 20 L at standard temperature and pressure
(STP). What will be the volume of a sample of
argon gas that has the same number of moles and
pressure but twice the absolute temperature?
A
B
C
D
10 L
20 L
40 L
80 L
43 Standard temperature and pressure (STP) are
defined as
A
B
C
D
0◦ C and 1.0 atm pressure.
0◦ C and 273 mm Hg pressure.
0 K and 1.0 atm pressure.
0 K and 760 mm Hg pressure.
44 Under which of the following sets of conditions
will a 0.50 mole sample of helium occupy a
volume of 11.2 liters?
A
B
C
D
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298 K and 0.90 atm
273 K and 1.10 atm
373 K and 0.50 atm
273 K and 1.00 atm
STOP